Effect of Coulomb correlation on electron transport through a concentric quantum ring–quantum dot structure

作     者：T. Chwiej K. Kutorasiński 

作者机构：Faculty of Physics and Applied Computer Science AGH University of Science and Technology al. Mickiewicza 30 30-059 Kraków Poland 

出 版 物：《Physical Review B》 (Phys. Rev. B Condens. Matter Mater. Phys.)

年 卷 期：2010年第81卷第16期

页      面：165321-165321页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：Polish Ministry of Science and Higher Education [N N202 103938] 

主　　题：correlation transport structure Schrodinger equation transport quanta Inelastic scattering Electrons Concentric Quantum dots Charge carriers electron transfer 

摘      要：We study transfer of a single-electron through a quantum ring capacitively coupled to the charged quantum dot placed in its center. For this purpose we solve the time-dependent Schrödinger equation for the pair of particles: the electron traveling through the ring and the other carrier confined within the quantum dot. The correlation effects due to the interaction between the charge carriers are described in a numerically exact manner. We find that the amplitude of Aharonov-Bohm oscillations of the transfer probability is significantly affected by the presence of the dot-confined carrier. In particular the Coulomb correlation leads to inelastic scattering. When the inelastic scattering is strong the transmission of electron through the ring is not completely blocked for (n+1/2) magnetic flux quanta.